Tolerance and Efficacy Open-label Study With RV4421B, in Various Populations With Atopic Dermatitis for 12 Weeks

Pierre Fabre Laboratories have developed a cream with medical device status, RV4421B-EV0407 indicated for the treatment of eczemas, including atopic eczema, contact eczema and chronic hand eczema. This product is already marketed in several countries. The objective of this clinical study is to evaluate the safety and efficacy of the study product when used alone or in association with topical corticosteroid therapy, in an ethnically diverse adult and pediatric population (including dark skin) and over a long period of time with a 12-week follow-up. 5 visits are planned: * Visit 1: Inclusion visit (Day 1) * Visit 2: Intermediate visit (Phone visit - Between Day 8 and Day 15) * Visit 3: Intermediate visit (Day 29 ± 3 days) * Visit 4: Intermediate visit (Day 57 ± 3 days) * Visit 5: End of study visit (Day 85 ± 3 days)